GB/T 43311-2023 Chinese PDF (GB/T43311-2023)GB T 43311 2023_Chinese: Design method for ductile iron pipes (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 43311 2023
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GB/T 43311-2023_Chinese: Design method for ductile iron pipes (Chinese: 球墨铸铁管设计方法) Note/Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working-hours typically, ASAP English versions: GB/T 43311-2023